A Managed Care Organization (MCO) is a health plan or health care company that utilizes managed care as its model to keep the quality of care high while limiting costs. As part of a managed care system, an MCO agrees to offer its services at a reduced cost, along with other MCOs in the network.

The airport code MCO stands for McCoy Air Force Base, which was the original military installation located on the site of what is now Orlando International Airport. The base was named in honor of Colonel Michael N.W. McCoy, a distinguished commander of the 306th Bombardment Wing who was tragically killed in a B-47 crash in 1957. When the military base was decommissioned in the mid-1970s and transitioned into a civilian commercial airport, the International Air Transport Association (IATA) decided to keep the "MCO" designation rather than changing it to "ORL" (which was already assigned to Orlando Executive Airport). In 2026, MCO has grown into one of the busiest hubs in the world, serving as the primary gateway for millions of tourists visiting Walt Disney World and Universal Orlando Resort. While many travelers jokingly assume it stands for "Mickey's Corporate Office," the code remains a historical tribute to a fallen Air Force officer and the site's Cold War-era origins as a strategic bomber base.